./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ebb73aa3b2fe06c298821e537034d0c16e316e18b31a7db411eb85fc916df11 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 06:06:25,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 06:06:25,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 06:06:25,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 06:06:25,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 06:06:25,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 06:06:25,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 06:06:25,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 06:06:25,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 06:06:25,103 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 06:06:25,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 06:06:25,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 06:06:25,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 06:06:25,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 06:06:25,103 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 06:06:25,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 06:06:25,104 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 06:06:25,105 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:06:25,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:06:25,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:06:25,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 06:06:25,106 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ebb73aa3b2fe06c298821e537034d0c16e316e18b31a7db411eb85fc916df11 [2025-01-09 06:06:25,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 06:06:25,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 06:06:25,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 06:06:25,388 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 06:06:25,388 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 06:06:25,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2025-01-09 06:06:26,855 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6825a4062/bfb4f528c3ae439eac38d33876a6af67/FLAG58f9074b0 [2025-01-09 06:06:27,164 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 06:06:27,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2025-01-09 06:06:27,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6825a4062/bfb4f528c3ae439eac38d33876a6af67/FLAG58f9074b0 [2025-01-09 06:06:27,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6825a4062/bfb4f528c3ae439eac38d33876a6af67 [2025-01-09 06:06:27,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 06:06:27,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 06:06:27,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 06:06:27,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 06:06:27,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 06:06:27,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a328d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27, skipping insertion in model container [2025-01-09 06:06:27,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 06:06:27,568 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[911,924] [2025-01-09 06:06:27,627 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[8416,8429] [2025-01-09 06:06:27,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:06:27,701 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 06:06:27,711 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[911,924] [2025-01-09 06:06:27,739 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[8416,8429] [2025-01-09 06:06:27,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:06:27,778 INFO L204 MainTranslator]: Completed translation [2025-01-09 06:06:27,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27 WrapperNode [2025-01-09 06:06:27,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 06:06:27,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 06:06:27,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 06:06:27,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 06:06:27,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,834 INFO L138 Inliner]: procedures = 59, calls = 67, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 479 [2025-01-09 06:06:27,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 06:06:27,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 06:06:27,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 06:06:27,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 06:06:27,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,876 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 06:06:27,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,890 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 06:06:27,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 06:06:27,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 06:06:27,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 06:06:27,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (1/1) ... [2025-01-09 06:06:27,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:06:27,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:27,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 06:06:27,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 06:06:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 06:06:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-01-09 06:06:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-01-09 06:06:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2025-01-09 06:06:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2025-01-09 06:06:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2025-01-09 06:06:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2025-01-09 06:06:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2025-01-09 06:06:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2025-01-09 06:06:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2025-01-09 06:06:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2025-01-09 06:06:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2025-01-09 06:06:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2025-01-09 06:06:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2025-01-09 06:06:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2025-01-09 06:06:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2025-01-09 06:06:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2025-01-09 06:06:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2025-01-09 06:06:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2025-01-09 06:06:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2025-01-09 06:06:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2025-01-09 06:06:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2025-01-09 06:06:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2025-01-09 06:06:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 06:06:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2025-01-09 06:06:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2025-01-09 06:06:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2025-01-09 06:06:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2025-01-09 06:06:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 06:06:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 06:06:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2025-01-09 06:06:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2025-01-09 06:06:28,062 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 06:06:28,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 06:06:28,369 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !(1 == ~q_free~0); [2025-01-09 06:06:28,369 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2025-01-09 06:06:28,443 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2025-01-09 06:06:28,443 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 06:06:28,461 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 06:06:28,464 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2025-01-09 06:06:28,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:06:28 BoogieIcfgContainer [2025-01-09 06:06:28,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 06:06:28,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 06:06:28,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 06:06:28,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 06:06:28,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 06:06:27" (1/3) ... [2025-01-09 06:06:28,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcbccd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:06:28, skipping insertion in model container [2025-01-09 06:06:28,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:06:27" (2/3) ... [2025-01-09 06:06:28,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcbccd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:06:28, skipping insertion in model container [2025-01-09 06:06:28,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:06:28" (3/3) ... [2025-01-09 06:06:28,473 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.02.cil-1.c [2025-01-09 06:06:28,483 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 06:06:28,486 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_3.cil+token_ring.02.cil-1.c that has 15 procedures, 243 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-01-09 06:06:28,525 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 06:06:28,532 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@248b91d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 06:06:28,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 06:06:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 196 states have (on average 1.510204081632653) internal successors, (296), 200 states have internal predecessors, (296), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 06:06:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-09 06:06:28,541 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:28,541 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:28,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:28,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1599322281, now seen corresponding path program 1 times [2025-01-09 06:06:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159337697] [2025-01-09 06:06:28,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:28,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-09 06:06:28,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 06:06:28,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:28,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159337697] [2025-01-09 06:06:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159337697] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:28,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:06:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890869708] [2025-01-09 06:06:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:28,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:06:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:28,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:06:28,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:06:28,861 INFO L87 Difference]: Start difference. First operand has 243 states, 196 states have (on average 1.510204081632653) internal successors, (296), 200 states have internal predecessors, (296), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-01-09 06:06:29,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:29,305 INFO L93 Difference]: Finished difference Result 583 states and 871 transitions. [2025-01-09 06:06:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 06:06:29,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2025-01-09 06:06:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:29,314 INFO L225 Difference]: With dead ends: 583 [2025-01-09 06:06:29,314 INFO L226 Difference]: Without dead ends: 348 [2025-01-09 06:06:29,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:29,318 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 316 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:29,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 860 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 06:06:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-01-09 06:06:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 341. [2025-01-09 06:06:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 272 states have (on average 1.463235294117647) internal successors, (398), 278 states have internal predecessors, (398), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2025-01-09 06:06:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 491 transitions. [2025-01-09 06:06:29,368 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 491 transitions. Word has length 63 [2025-01-09 06:06:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:29,369 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 491 transitions. [2025-01-09 06:06:29,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-01-09 06:06:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 491 transitions. [2025-01-09 06:06:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-09 06:06:29,371 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:29,372 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:29,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 06:06:29,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:29,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1118242023, now seen corresponding path program 1 times [2025-01-09 06:06:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067467065] [2025-01-09 06:06:29,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:29,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-09 06:06:29,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 06:06:29,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:29,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:29,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:29,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067467065] [2025-01-09 06:06:29,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067467065] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:29,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:29,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 06:06:29,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025817564] [2025-01-09 06:06:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:29,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 06:06:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:29,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 06:06:29,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 06:06:29,474 INFO L87 Difference]: Start difference. First operand 341 states and 491 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-09 06:06:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:29,619 INFO L93 Difference]: Finished difference Result 918 states and 1315 transitions. [2025-01-09 06:06:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:06:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2025-01-09 06:06:29,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:29,624 INFO L225 Difference]: With dead ends: 918 [2025-01-09 06:06:29,624 INFO L226 Difference]: Without dead ends: 717 [2025-01-09 06:06:29,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 06:06:29,626 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 430 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:29,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 841 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 06:06:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2025-01-09 06:06:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 703. [2025-01-09 06:06:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 562 states have (on average 1.4270462633451957) internal successors, (802), 572 states have internal predecessors, (802), 85 states have call successors, (85), 49 states have call predecessors, (85), 54 states have return successors, (100), 84 states have call predecessors, (100), 83 states have call successors, (100) [2025-01-09 06:06:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 987 transitions. [2025-01-09 06:06:29,666 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 987 transitions. Word has length 63 [2025-01-09 06:06:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:29,666 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 987 transitions. [2025-01-09 06:06:29,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-09 06:06:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 987 transitions. [2025-01-09 06:06:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-01-09 06:06:29,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:29,669 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:29,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 06:06:29,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:29,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1916223668, now seen corresponding path program 1 times [2025-01-09 06:06:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960545268] [2025-01-09 06:06:29,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:29,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-09 06:06:29,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 06:06:29,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:29,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:29,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:29,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960545268] [2025-01-09 06:06:29,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960545268] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:29,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:29,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 06:06:29,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380060924] [2025-01-09 06:06:29,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:29,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 06:06:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:29,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 06:06:29,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:29,755 INFO L87 Difference]: Start difference. First operand 703 states and 987 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 06:06:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:29,825 INFO L93 Difference]: Finished difference Result 1281 states and 1803 transitions. [2025-01-09 06:06:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 06:06:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-01-09 06:06:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:29,829 INFO L225 Difference]: With dead ends: 1281 [2025-01-09 06:06:29,829 INFO L226 Difference]: Without dead ends: 718 [2025-01-09 06:06:29,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:29,831 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 0 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:29,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1664 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-01-09 06:06:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2025-01-09 06:06:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 574 states have (on average 1.4128919860627178) internal successors, (811), 584 states have internal predecessors, (811), 85 states have call successors, (85), 49 states have call predecessors, (85), 57 states have return successors, (105), 87 states have call predecessors, (105), 83 states have call successors, (105) [2025-01-09 06:06:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1001 transitions. [2025-01-09 06:06:29,863 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1001 transitions. Word has length 64 [2025-01-09 06:06:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:29,863 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1001 transitions. [2025-01-09 06:06:29,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 06:06:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1001 transitions. [2025-01-09 06:06:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-01-09 06:06:29,865 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:29,865 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:29,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 06:06:29,865 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:29,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1984376842, now seen corresponding path program 1 times [2025-01-09 06:06:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:29,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677969036] [2025-01-09 06:06:29,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:29,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-09 06:06:29,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 06:06:29,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:29,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:29,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677969036] [2025-01-09 06:06:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677969036] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:29,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 06:06:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924326907] [2025-01-09 06:06:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:29,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 06:06:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:29,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 06:06:29,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:29,930 INFO L87 Difference]: Start difference. First operand 718 states and 1001 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-09 06:06:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:30,393 INFO L93 Difference]: Finished difference Result 2347 states and 3273 transitions. [2025-01-09 06:06:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 06:06:30,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 64 [2025-01-09 06:06:30,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:30,398 INFO L225 Difference]: With dead ends: 2347 [2025-01-09 06:06:30,398 INFO L226 Difference]: Without dead ends: 913 [2025-01-09 06:06:30,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 06:06:30,402 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 1185 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:30,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1645 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 06:06:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2025-01-09 06:06:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 670. [2025-01-09 06:06:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 526 states have (on average 1.376425855513308) internal successors, (724), 536 states have internal predecessors, (724), 85 states have call successors, (85), 49 states have call predecessors, (85), 57 states have return successors, (97), 87 states have call predecessors, (97), 83 states have call successors, (97) [2025-01-09 06:06:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 906 transitions. [2025-01-09 06:06:30,436 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 906 transitions. Word has length 64 [2025-01-09 06:06:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:30,436 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 906 transitions. [2025-01-09 06:06:30,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-09 06:06:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 906 transitions. [2025-01-09 06:06:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-09 06:06:30,438 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:30,438 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:30,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 06:06:30,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:30,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1117506841, now seen corresponding path program 1 times [2025-01-09 06:06:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363270563] [2025-01-09 06:06:30,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:30,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-09 06:06:30,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-09 06:06:30,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:30,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363270563] [2025-01-09 06:06:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363270563] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:30,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 06:06:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311795132] [2025-01-09 06:06:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:30,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 06:06:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:30,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 06:06:30,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 06:06:30,564 INFO L87 Difference]: Start difference. First operand 670 states and 906 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-09 06:06:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:31,120 INFO L93 Difference]: Finished difference Result 1463 states and 1969 transitions. [2025-01-09 06:06:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 06:06:31,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2025-01-09 06:06:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:31,122 INFO L225 Difference]: With dead ends: 1463 [2025-01-09 06:06:31,122 INFO L226 Difference]: Without dead ends: 126 [2025-01-09 06:06:31,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-01-09 06:06:31,125 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 696 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:31,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 894 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 06:06:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-09 06:06:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2025-01-09 06:06:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 103 states have (on average 1.4757281553398058) internal successors, (152), 104 states have internal predecessors, (152), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 06:06:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2025-01-09 06:06:31,132 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 65 [2025-01-09 06:06:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:31,133 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2025-01-09 06:06:31,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-09 06:06:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2025-01-09 06:06:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:31,133 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:31,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:31,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 06:06:31,134 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:31,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1806793984, now seen corresponding path program 1 times [2025-01-09 06:06:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252812187] [2025-01-09 06:06:31,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:31,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:31,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:31,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:31,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:31,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252812187] [2025-01-09 06:06:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252812187] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 06:06:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321343444] [2025-01-09 06:06:31,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:31,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:31,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:31,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 06:06:31,167 INFO L87 Difference]: Start difference. First operand 126 states and 184 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:31,179 INFO L93 Difference]: Finished difference Result 244 states and 357 transitions. [2025-01-09 06:06:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:31,181 INFO L225 Difference]: With dead ends: 244 [2025-01-09 06:06:31,181 INFO L226 Difference]: Without dead ends: 126 [2025-01-09 06:06:31,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 06:06:31,182 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 176 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:31,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-09 06:06:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2025-01-09 06:06:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 103 states have (on average 1.4660194174757282) internal successors, (151), 104 states have internal predecessors, (151), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 06:06:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2025-01-09 06:06:31,193 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 66 [2025-01-09 06:06:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:31,193 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 183 transitions. [2025-01-09 06:06:31,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 183 transitions. [2025-01-09 06:06:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:31,194 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:31,194 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:31,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 06:06:31,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:31,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1227256062, now seen corresponding path program 1 times [2025-01-09 06:06:31,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:31,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182856883] [2025-01-09 06:06:31,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:31,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:31,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:31,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:31,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:31,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:31,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182856883] [2025-01-09 06:06:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182856883] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:31,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:06:31,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259843695] [2025-01-09 06:06:31,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:31,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:06:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:31,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:06:31,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:06:31,281 INFO L87 Difference]: Start difference. First operand 126 states and 183 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:31,505 INFO L93 Difference]: Finished difference Result 364 states and 537 transitions. [2025-01-09 06:06:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 06:06:31,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:31,508 INFO L225 Difference]: With dead ends: 364 [2025-01-09 06:06:31,508 INFO L226 Difference]: Without dead ends: 249 [2025-01-09 06:06:31,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:31,509 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 299 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:31,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 474 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 06:06:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-01-09 06:06:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 240. [2025-01-09 06:06:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 199 states have (on average 1.4824120603015076) internal successors, (295), 201 states have internal predecessors, (295), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2025-01-09 06:06:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 350 transitions. [2025-01-09 06:06:31,523 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 350 transitions. Word has length 66 [2025-01-09 06:06:31,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:31,523 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 350 transitions. [2025-01-09 06:06:31,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 350 transitions. [2025-01-09 06:06:31,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:31,524 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:31,524 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:31,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 06:06:31,524 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:31,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash -134281598, now seen corresponding path program 1 times [2025-01-09 06:06:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619608081] [2025-01-09 06:06:31,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:31,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:31,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:31,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:31,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:31,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619608081] [2025-01-09 06:06:31,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619608081] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:31,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 06:06:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865467876] [2025-01-09 06:06:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:31,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 06:06:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:31,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 06:06:31,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:31,600 INFO L87 Difference]: Start difference. First operand 240 states and 350 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:31,924 INFO L93 Difference]: Finished difference Result 609 states and 896 transitions. [2025-01-09 06:06:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 06:06:31,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:31,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:31,927 INFO L225 Difference]: With dead ends: 609 [2025-01-09 06:06:31,927 INFO L226 Difference]: Without dead ends: 380 [2025-01-09 06:06:31,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 06:06:31,929 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 289 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:31,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 864 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 06:06:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2025-01-09 06:06:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 347. [2025-01-09 06:06:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 288 states have (on average 1.4756944444444444) internal successors, (425), 291 states have internal predecessors, (425), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2025-01-09 06:06:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 505 transitions. [2025-01-09 06:06:31,958 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 505 transitions. Word has length 66 [2025-01-09 06:06:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:31,958 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 505 transitions. [2025-01-09 06:06:31,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 505 transitions. [2025-01-09 06:06:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:31,959 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:31,959 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:31,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 06:06:31,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:31,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1404058432, now seen corresponding path program 1 times [2025-01-09 06:06:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:31,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630819716] [2025-01-09 06:06:31,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:31,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:31,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:31,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:31,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:32,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:32,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630819716] [2025-01-09 06:06:32,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630819716] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:32,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:32,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:06:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231442692] [2025-01-09 06:06:32,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:32,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:06:32,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:32,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:06:32,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:06:32,016 INFO L87 Difference]: Start difference. First operand 347 states and 505 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:32,145 INFO L93 Difference]: Finished difference Result 703 states and 1032 transitions. [2025-01-09 06:06:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:06:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:32,147 INFO L225 Difference]: With dead ends: 703 [2025-01-09 06:06:32,148 INFO L226 Difference]: Without dead ends: 367 [2025-01-09 06:06:32,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:32,149 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 222 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:32,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 304 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 06:06:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2025-01-09 06:06:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 347. [2025-01-09 06:06:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 288 states have (on average 1.4652777777777777) internal successors, (422), 291 states have internal predecessors, (422), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2025-01-09 06:06:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 502 transitions. [2025-01-09 06:06:32,167 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 502 transitions. Word has length 66 [2025-01-09 06:06:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:32,167 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 502 transitions. [2025-01-09 06:06:32,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 502 transitions. [2025-01-09 06:06:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:32,168 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:32,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:32,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 06:06:32,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:32,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:32,168 INFO L85 PathProgramCache]: Analyzing trace with hash 922978174, now seen corresponding path program 1 times [2025-01-09 06:06:32,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031328375] [2025-01-09 06:06:32,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:32,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:32,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:32,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:32,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:32,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:32,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031328375] [2025-01-09 06:06:32,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031328375] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:32,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 06:06:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537715567] [2025-01-09 06:06:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:32,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 06:06:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:32,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 06:06:32,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:32,234 INFO L87 Difference]: Start difference. First operand 347 states and 502 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:32,574 INFO L93 Difference]: Finished difference Result 946 states and 1372 transitions. [2025-01-09 06:06:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 06:06:32,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:32,577 INFO L225 Difference]: With dead ends: 946 [2025-01-09 06:06:32,577 INFO L226 Difference]: Without dead ends: 610 [2025-01-09 06:06:32,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 06:06:32,579 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 316 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:32,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 798 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 06:06:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-01-09 06:06:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 550. [2025-01-09 06:06:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 455 states have (on average 1.4527472527472527) internal successors, (661), 462 states have internal predecessors, (661), 58 states have call successors, (58), 30 states have call predecessors, (58), 36 states have return successors, (74), 61 states have call predecessors, (74), 58 states have call successors, (74) [2025-01-09 06:06:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 793 transitions. [2025-01-09 06:06:32,613 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 793 transitions. Word has length 66 [2025-01-09 06:06:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:32,614 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 793 transitions. [2025-01-09 06:06:32,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 793 transitions. [2025-01-09 06:06:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:32,615 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:32,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:32,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 06:06:32,615 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:32,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash 907459456, now seen corresponding path program 1 times [2025-01-09 06:06:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843544727] [2025-01-09 06:06:32,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:32,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:32,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:32,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:32,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843544727] [2025-01-09 06:06:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843544727] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 06:06:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668262840] [2025-01-09 06:06:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:32,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 06:06:32,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:32,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 06:06:32,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:32,691 INFO L87 Difference]: Start difference. First operand 550 states and 793 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:33,040 INFO L93 Difference]: Finished difference Result 1561 states and 2259 transitions. [2025-01-09 06:06:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 06:06:33,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:33,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:33,045 INFO L225 Difference]: With dead ends: 1561 [2025-01-09 06:06:33,046 INFO L226 Difference]: Without dead ends: 1022 [2025-01-09 06:06:33,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 06:06:33,047 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 271 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:33,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 790 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 06:06:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2025-01-09 06:06:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 967. [2025-01-09 06:06:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 796 states have (on average 1.4409547738693467) internal successors, (1147), 817 states have internal predecessors, (1147), 96 states have call successors, (96), 54 states have call predecessors, (96), 74 states have return successors, (160), 103 states have call predecessors, (160), 96 states have call successors, (160) [2025-01-09 06:06:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1403 transitions. [2025-01-09 06:06:33,097 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1403 transitions. Word has length 66 [2025-01-09 06:06:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:33,098 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1403 transitions. [2025-01-09 06:06:33,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1403 transitions. [2025-01-09 06:06:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:33,099 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:33,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:33,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 06:06:33,099 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:33,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:33,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1448345794, now seen corresponding path program 1 times [2025-01-09 06:06:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:33,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68555446] [2025-01-09 06:06:33,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:33,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:33,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:33,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:33,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:33,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68555446] [2025-01-09 06:06:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68555446] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:33,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:33,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:06:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263508785] [2025-01-09 06:06:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:33,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:06:33,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:33,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:06:33,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:06:33,143 INFO L87 Difference]: Start difference. First operand 967 states and 1403 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:33,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:33,197 INFO L93 Difference]: Finished difference Result 1949 states and 2864 transitions. [2025-01-09 06:06:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 06:06:33,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:33,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:33,202 INFO L225 Difference]: With dead ends: 1949 [2025-01-09 06:06:33,202 INFO L226 Difference]: Without dead ends: 994 [2025-01-09 06:06:33,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:06:33,204 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:33,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 710 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2025-01-09 06:06:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 994. [2025-01-09 06:06:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 823 states have (on average 1.4264884568651275) internal successors, (1174), 844 states have internal predecessors, (1174), 96 states have call successors, (96), 54 states have call predecessors, (96), 74 states have return successors, (160), 103 states have call predecessors, (160), 96 states have call successors, (160) [2025-01-09 06:06:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1430 transitions. [2025-01-09 06:06:33,252 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1430 transitions. Word has length 66 [2025-01-09 06:06:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:33,253 INFO L471 AbstractCegarLoop]: Abstraction has 994 states and 1430 transitions. [2025-01-09 06:06:33,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1430 transitions. [2025-01-09 06:06:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 06:06:33,254 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:33,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:33,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 06:06:33,255 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:33,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1001254336, now seen corresponding path program 1 times [2025-01-09 06:06:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:33,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140207920] [2025-01-09 06:06:33,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:33,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:33,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 06:06:33,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 06:06:33,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:33,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:06:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140207920] [2025-01-09 06:06:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140207920] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:33,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:06:33,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:06:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275864304] [2025-01-09 06:06:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:33,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:06:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:33,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:06:33,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:06:33,297 INFO L87 Difference]: Start difference. First operand 994 states and 1430 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:33,623 INFO L93 Difference]: Finished difference Result 4504 states and 6639 transitions. [2025-01-09 06:06:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 06:06:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 06:06:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:33,636 INFO L225 Difference]: With dead ends: 4504 [2025-01-09 06:06:33,636 INFO L226 Difference]: Without dead ends: 3522 [2025-01-09 06:06:33,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 06:06:33,639 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 773 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:33,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 699 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 06:06:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2025-01-09 06:06:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3401. [2025-01-09 06:06:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 2805 states have (on average 1.4188948306595366) internal successors, (3980), 2879 states have internal predecessors, (3980), 339 states have call successors, (339), 198 states have call predecessors, (339), 256 states have return successors, (589), 331 states have call predecessors, (589), 339 states have call successors, (589) [2025-01-09 06:06:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 4908 transitions. [2025-01-09 06:06:33,883 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 4908 transitions. Word has length 66 [2025-01-09 06:06:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:33,883 INFO L471 AbstractCegarLoop]: Abstraction has 3401 states and 4908 transitions. [2025-01-09 06:06:33,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 06:06:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 4908 transitions. [2025-01-09 06:06:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 06:06:33,890 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:33,890 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:33,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 06:06:33,890 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:33,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 738969356, now seen corresponding path program 1 times [2025-01-09 06:06:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:33,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850840724] [2025-01-09 06:06:33,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:33,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 06:06:33,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 06:06:33,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:33,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 06:06:33,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:33,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850840724] [2025-01-09 06:06:33,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850840724] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:33,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790360853] [2025-01-09 06:06:33,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:33,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:33,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:33,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 06:06:34,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 06:06:34,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 06:06:34,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:34,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:34,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 06:06:34,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 06:06:34,088 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790360853] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:34,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:34,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:34,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490874852] [2025-01-09 06:06:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:34,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:34,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:34,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:34,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:34,090 INFO L87 Difference]: Start difference. First operand 3401 states and 4908 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 06:06:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:34,491 INFO L93 Difference]: Finished difference Result 9995 states and 14529 transitions. [2025-01-09 06:06:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:34,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2025-01-09 06:06:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:34,549 INFO L225 Difference]: With dead ends: 9995 [2025-01-09 06:06:34,550 INFO L226 Difference]: Without dead ends: 4407 [2025-01-09 06:06:34,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:34,561 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 151 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:34,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 510 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2025-01-09 06:06:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4407. [2025-01-09 06:06:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4407 states, 3644 states have (on average 1.4124588364434687) internal successors, (5147), 3730 states have internal predecessors, (5147), 434 states have call successors, (434), 258 states have call predecessors, (434), 328 states have return successors, (761), 426 states have call predecessors, (761), 434 states have call successors, (761) [2025-01-09 06:06:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 6342 transitions. [2025-01-09 06:06:34,862 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 6342 transitions. Word has length 107 [2025-01-09 06:06:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:34,862 INFO L471 AbstractCegarLoop]: Abstraction has 4407 states and 6342 transitions. [2025-01-09 06:06:34,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 06:06:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 6342 transitions. [2025-01-09 06:06:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-01-09 06:06:34,871 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:34,871 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:34,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 06:06:35,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 06:06:35,077 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:35,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash -712488473, now seen corresponding path program 1 times [2025-01-09 06:06:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:35,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995681707] [2025-01-09 06:06:35,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:35,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 06:06:35,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 06:06:35,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:35,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-01-09 06:06:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995681707] [2025-01-09 06:06:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995681707] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155134846] [2025-01-09 06:06:35,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:35,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:35,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:35,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:35,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 06:06:35,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 06:06:35,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 06:06:35,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:35,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:35,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 06:06:35,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 06:06:35,420 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155134846] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 06:06:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583641371] [2025-01-09 06:06:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:35,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:35,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:35,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:35,421 INFO L87 Difference]: Start difference. First operand 4407 states and 6342 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 06:06:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:35,934 INFO L93 Difference]: Finished difference Result 12942 states and 18809 transitions. [2025-01-09 06:06:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:35,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 139 [2025-01-09 06:06:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:35,976 INFO L225 Difference]: With dead ends: 12942 [2025-01-09 06:06:35,976 INFO L226 Difference]: Without dead ends: 8547 [2025-01-09 06:06:35,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:35,991 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 95 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:35,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 338 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2025-01-09 06:06:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 8502. [2025-01-09 06:06:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8502 states, 7050 states have (on average 1.4079432624113475) internal successors, (9926), 7221 states have internal predecessors, (9926), 808 states have call successors, (808), 503 states have call predecessors, (808), 643 states have return successors, (1408), 785 states have call predecessors, (1408), 808 states have call successors, (1408) [2025-01-09 06:06:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8502 states to 8502 states and 12142 transitions. [2025-01-09 06:06:36,495 INFO L78 Accepts]: Start accepts. Automaton has 8502 states and 12142 transitions. Word has length 139 [2025-01-09 06:06:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:36,495 INFO L471 AbstractCegarLoop]: Abstraction has 8502 states and 12142 transitions. [2025-01-09 06:06:36,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 06:06:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8502 states and 12142 transitions. [2025-01-09 06:06:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 06:06:36,508 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:36,509 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:36,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 06:06:36,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 06:06:36,713 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:36,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 696096271, now seen corresponding path program 1 times [2025-01-09 06:06:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:36,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960206931] [2025-01-09 06:06:36,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:36,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:36,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 06:06:36,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 06:06:36,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:36,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 06:06:36,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960206931] [2025-01-09 06:06:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960206931] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939925347] [2025-01-09 06:06:36,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:36,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:36,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:36,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:36,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 06:06:36,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 06:06:36,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 06:06:36,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:36,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:36,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 06:06:36,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 06:06:36,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:36,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939925347] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:36,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:36,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:36,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289703117] [2025-01-09 06:06:36,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:36,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:36,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:36,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:36,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:36,932 INFO L87 Difference]: Start difference. First operand 8502 states and 12142 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2025-01-09 06:06:37,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:37,471 INFO L93 Difference]: Finished difference Result 18111 states and 25739 transitions. [2025-01-09 06:06:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:37,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 155 [2025-01-09 06:06:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:37,534 INFO L225 Difference]: With dead ends: 18111 [2025-01-09 06:06:37,534 INFO L226 Difference]: Without dead ends: 9622 [2025-01-09 06:06:37,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:37,560 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 159 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:37,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 349 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9622 states. [2025-01-09 06:06:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9622 to 9594. [2025-01-09 06:06:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9594 states, 8027 states have (on average 1.3590382459200199) internal successors, (10909), 8198 states have internal predecessors, (10909), 839 states have call successors, (839), 584 states have call predecessors, (839), 727 states have return successors, (1516), 819 states have call predecessors, (1516), 839 states have call successors, (1516) [2025-01-09 06:06:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9594 states to 9594 states and 13264 transitions. [2025-01-09 06:06:38,523 INFO L78 Accepts]: Start accepts. Automaton has 9594 states and 13264 transitions. Word has length 155 [2025-01-09 06:06:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:38,524 INFO L471 AbstractCegarLoop]: Abstraction has 9594 states and 13264 transitions. [2025-01-09 06:06:38,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2025-01-09 06:06:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9594 states and 13264 transitions. [2025-01-09 06:06:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 06:06:38,545 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:38,545 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:38,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 06:06:38,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:38,746 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1791639681, now seen corresponding path program 1 times [2025-01-09 06:06:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678935355] [2025-01-09 06:06:38,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:38,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 06:06:38,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 06:06:38,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:38,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 06:06:38,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:38,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678935355] [2025-01-09 06:06:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678935355] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:38,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449506112] [2025-01-09 06:06:38,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:38,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:38,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:38,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 06:06:38,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 06:06:38,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 06:06:38,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:38,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:38,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 06:06:38,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 06:06:38,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:38,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449506112] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:38,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:38,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:38,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489376932] [2025-01-09 06:06:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:38,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:38,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:38,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:38,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:38,972 INFO L87 Difference]: Start difference. First operand 9594 states and 13264 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:39,739 INFO L93 Difference]: Finished difference Result 28172 states and 39393 transitions. [2025-01-09 06:06:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2025-01-09 06:06:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:39,798 INFO L225 Difference]: With dead ends: 28172 [2025-01-09 06:06:39,799 INFO L226 Difference]: Without dead ends: 18591 [2025-01-09 06:06:39,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:39,819 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 143 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:39,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 509 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18591 states. [2025-01-09 06:06:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18591 to 18571. [2025-01-09 06:06:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18571 states, 15543 states have (on average 1.3501254584057132) internal successors, (20985), 15885 states have internal predecessors, (20985), 1602 states have call successors, (1602), 1136 states have call predecessors, (1602), 1425 states have return successors, (3382), 1565 states have call predecessors, (3382), 1602 states have call successors, (3382) [2025-01-09 06:06:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18571 states to 18571 states and 25969 transitions. [2025-01-09 06:06:40,674 INFO L78 Accepts]: Start accepts. Automaton has 18571 states and 25969 transitions. Word has length 156 [2025-01-09 06:06:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:40,675 INFO L471 AbstractCegarLoop]: Abstraction has 18571 states and 25969 transitions. [2025-01-09 06:06:40,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18571 states and 25969 transitions. [2025-01-09 06:06:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 06:06:40,703 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:40,703 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:40,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 06:06:40,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 06:06:40,904 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:40,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash -491598391, now seen corresponding path program 1 times [2025-01-09 06:06:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935314339] [2025-01-09 06:06:40,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:40,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 06:06:40,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 06:06:40,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:40,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-01-09 06:06:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:40,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935314339] [2025-01-09 06:06:40,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935314339] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:40,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253117687] [2025-01-09 06:06:40,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:40,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:40,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:40,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:40,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 06:06:41,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 06:06:41,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 06:06:41,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:41,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:41,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 06:06:41,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-09 06:06:41,243 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253117687] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:41,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:41,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449188478] [2025-01-09 06:06:41,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:41,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:41,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:41,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:41,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:41,244 INFO L87 Difference]: Start difference. First operand 18571 states and 25969 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:42,583 INFO L93 Difference]: Finished difference Result 35616 states and 50845 transitions. [2025-01-09 06:06:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2025-01-09 06:06:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:42,749 INFO L225 Difference]: With dead ends: 35616 [2025-01-09 06:06:42,749 INFO L226 Difference]: Without dead ends: 18362 [2025-01-09 06:06:42,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:42,846 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 140 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:42,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 216 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18362 states. [2025-01-09 06:06:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18362 to 17446. [2025-01-09 06:06:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17446 states, 14663 states have (on average 1.3176021278046783) internal successors, (19320), 14913 states have internal predecessors, (19320), 1512 states have call successors, (1512), 1073 states have call predecessors, (1512), 1270 states have return successors, (2830), 1467 states have call predecessors, (2830), 1512 states have call successors, (2830) [2025-01-09 06:06:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17446 states to 17446 states and 23662 transitions. [2025-01-09 06:06:43,838 INFO L78 Accepts]: Start accepts. Automaton has 17446 states and 23662 transitions. Word has length 156 [2025-01-09 06:06:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:43,838 INFO L471 AbstractCegarLoop]: Abstraction has 17446 states and 23662 transitions. [2025-01-09 06:06:43,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 17446 states and 23662 transitions. [2025-01-09 06:06:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 06:06:43,855 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:43,855 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:43,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 06:06:44,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 06:06:44,056 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:44,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1136134058, now seen corresponding path program 1 times [2025-01-09 06:06:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514968687] [2025-01-09 06:06:44,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:44,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 06:06:44,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 06:06:44,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:44,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 06:06:44,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514968687] [2025-01-09 06:06:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514968687] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280181611] [2025-01-09 06:06:44,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:44,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:44,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:44,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 06:06:44,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 06:06:44,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 06:06:44,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:44,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:44,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 06:06:44,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 06:06:44,245 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:44,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280181611] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:44,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:44,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:44,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885065702] [2025-01-09 06:06:44,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:44,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:44,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:44,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:44,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:44,246 INFO L87 Difference]: Start difference. First operand 17446 states and 23662 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:45,121 INFO L93 Difference]: Finished difference Result 37867 states and 52099 transitions. [2025-01-09 06:06:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2025-01-09 06:06:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:45,209 INFO L225 Difference]: With dead ends: 37867 [2025-01-09 06:06:45,210 INFO L226 Difference]: Without dead ends: 27322 [2025-01-09 06:06:45,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:45,234 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 140 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:45,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 497 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27322 states. [2025-01-09 06:06:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27322 to 27320. [2025-01-09 06:06:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27320 states, 22941 states have (on average 1.3083998082036528) internal successors, (30016), 23347 states have internal predecessors, (30016), 2368 states have call successors, (2368), 1697 states have call predecessors, (2368), 2010 states have return successors, (5182), 2283 states have call predecessors, (5182), 2368 states have call successors, (5182) [2025-01-09 06:06:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27320 states to 27320 states and 37566 transitions. [2025-01-09 06:06:46,389 INFO L78 Accepts]: Start accepts. Automaton has 27320 states and 37566 transitions. Word has length 156 [2025-01-09 06:06:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:46,390 INFO L471 AbstractCegarLoop]: Abstraction has 27320 states and 37566 transitions. [2025-01-09 06:06:46,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 27320 states and 37566 transitions. [2025-01-09 06:06:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 06:06:46,411 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:46,411 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:46,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 06:06:46,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:46,616 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:46,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:46,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1878049276, now seen corresponding path program 1 times [2025-01-09 06:06:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:46,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337179442] [2025-01-09 06:06:46,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:46,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 06:06:46,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 06:06:46,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:46,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-01-09 06:06:46,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337179442] [2025-01-09 06:06:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337179442] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409386775] [2025-01-09 06:06:46,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:46,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:46,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:46,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 06:06:46,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 06:06:46,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 06:06:46,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:46,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:46,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 06:06:46,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-09 06:06:46,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409386775] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:46,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:46,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322197462] [2025-01-09 06:06:46,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:46,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:46,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:46,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:46,815 INFO L87 Difference]: Start difference. First operand 27320 states and 37566 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 06:06:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:48,474 INFO L93 Difference]: Finished difference Result 56060 states and 77068 transitions. [2025-01-09 06:06:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2025-01-09 06:06:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:48,581 INFO L225 Difference]: With dead ends: 56060 [2025-01-09 06:06:48,581 INFO L226 Difference]: Without dead ends: 28757 [2025-01-09 06:06:48,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:48,640 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 138 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:48,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 341 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28757 states. [2025-01-09 06:06:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28757 to 28583. [2025-01-09 06:06:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28583 states, 24123 states have (on average 1.2959416324669402) internal successors, (31262), 24541 states have internal predecessors, (31262), 2379 states have call successors, (2379), 1752 states have call predecessors, (2379), 2080 states have return successors, (5362), 2297 states have call predecessors, (5362), 2379 states have call successors, (5362) [2025-01-09 06:06:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28583 states to 28583 states and 39003 transitions. [2025-01-09 06:06:49,957 INFO L78 Accepts]: Start accepts. Automaton has 28583 states and 39003 transitions. Word has length 157 [2025-01-09 06:06:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:49,957 INFO L471 AbstractCegarLoop]: Abstraction has 28583 states and 39003 transitions. [2025-01-09 06:06:49,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 06:06:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 28583 states and 39003 transitions. [2025-01-09 06:06:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 06:06:49,976 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:49,976 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:49,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 06:06:50,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:50,179 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:50,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2065259984, now seen corresponding path program 1 times [2025-01-09 06:06:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:50,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273041541] [2025-01-09 06:06:50,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:50,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 06:06:50,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 06:06:50,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:50,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-01-09 06:06:50,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:50,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273041541] [2025-01-09 06:06:50,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273041541] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:50,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794311028] [2025-01-09 06:06:50,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:50,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:50,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:50,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 06:06:50,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 06:06:50,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 06:06:50,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:50,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:50,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 06:06:50,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 06:06:50,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794311028] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:50,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:50,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111445006] [2025-01-09 06:06:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:50,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:50,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:50,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:50,417 INFO L87 Difference]: Start difference. First operand 28583 states and 39003 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 06:06:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:51,422 INFO L93 Difference]: Finished difference Result 51186 states and 70684 transitions. [2025-01-09 06:06:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:51,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 157 [2025-01-09 06:06:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:51,495 INFO L225 Difference]: With dead ends: 51186 [2025-01-09 06:06:51,495 INFO L226 Difference]: Without dead ends: 22620 [2025-01-09 06:06:51,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:51,540 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 113 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:51,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 207 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2025-01-09 06:06:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 22511. [2025-01-09 06:06:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22511 states, 19042 states have (on average 1.2671988236529776) internal successors, (24130), 19324 states have internal predecessors, (24130), 1819 states have call successors, (1819), 1390 states have call predecessors, (1819), 1649 states have return successors, (3705), 1804 states have call predecessors, (3705), 1819 states have call successors, (3705) [2025-01-09 06:06:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22511 states to 22511 states and 29654 transitions. [2025-01-09 06:06:52,614 INFO L78 Accepts]: Start accepts. Automaton has 22511 states and 29654 transitions. Word has length 157 [2025-01-09 06:06:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:52,615 INFO L471 AbstractCegarLoop]: Abstraction has 22511 states and 29654 transitions. [2025-01-09 06:06:52,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 06:06:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 22511 states and 29654 transitions. [2025-01-09 06:06:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-01-09 06:06:52,632 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:52,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:52,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 06:06:52,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:52,833 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:52,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 744681410, now seen corresponding path program 1 times [2025-01-09 06:06:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:52,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615127299] [2025-01-09 06:06:52,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:52,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-01-09 06:06:52,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-01-09 06:06:52,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:52,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 06:06:52,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615127299] [2025-01-09 06:06:52,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615127299] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658780032] [2025-01-09 06:06:52,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:52,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:52,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:52,971 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:52,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 06:06:53,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-01-09 06:06:53,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-01-09 06:06:53,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:53,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:53,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 06:06:53,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 06:06:53,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658780032] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:53,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:53,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042416511] [2025-01-09 06:06:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:53,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:53,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:53,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:53,094 INFO L87 Difference]: Start difference. First operand 22511 states and 29654 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:54,281 INFO L93 Difference]: Finished difference Result 38326 states and 52558 transitions. [2025-01-09 06:06:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:54,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2025-01-09 06:06:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:54,363 INFO L225 Difference]: With dead ends: 38326 [2025-01-09 06:06:54,363 INFO L226 Difference]: Without dead ends: 22544 [2025-01-09 06:06:54,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:54,401 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 125 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:54,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 468 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22544 states. [2025-01-09 06:06:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22544 to 22511. [2025-01-09 06:06:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22511 states, 19042 states have (on average 1.2447221930469488) internal successors, (23702), 19324 states have internal predecessors, (23702), 1819 states have call successors, (1819), 1390 states have call predecessors, (1819), 1649 states have return successors, (3705), 1804 states have call predecessors, (3705), 1819 states have call successors, (3705) [2025-01-09 06:06:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22511 states to 22511 states and 29226 transitions. [2025-01-09 06:06:55,775 INFO L78 Accepts]: Start accepts. Automaton has 22511 states and 29226 transitions. Word has length 161 [2025-01-09 06:06:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:55,775 INFO L471 AbstractCegarLoop]: Abstraction has 22511 states and 29226 transitions. [2025-01-09 06:06:55,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 06:06:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 22511 states and 29226 transitions. [2025-01-09 06:06:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-01-09 06:06:55,791 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:55,791 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:55,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 06:06:55,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:55,992 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:55,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash 597473122, now seen corresponding path program 1 times [2025-01-09 06:06:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:55,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619424744] [2025-01-09 06:06:55,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:55,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:56,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-01-09 06:06:56,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-01-09 06:06:56,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:56,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 06:06:56,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:56,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619424744] [2025-01-09 06:06:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619424744] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:56,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39166244] [2025-01-09 06:06:56,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:56,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:56,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:56,049 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:56,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 06:06:56,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-01-09 06:06:56,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-01-09 06:06:56,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:56,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:56,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 06:06:56,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 06:06:56,200 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39166244] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:06:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209995722] [2025-01-09 06:06:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:56,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:06:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:56,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:06:56,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:56,202 INFO L87 Difference]: Start difference. First operand 22511 states and 29226 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 06:06:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:06:57,035 INFO L93 Difference]: Finished difference Result 41555 states and 55820 transitions. [2025-01-09 06:06:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:06:57,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 161 [2025-01-09 06:06:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:06:57,101 INFO L225 Difference]: With dead ends: 41555 [2025-01-09 06:06:57,101 INFO L226 Difference]: Without dead ends: 21289 [2025-01-09 06:06:57,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:06:57,144 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 125 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:06:57,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 202 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:06:57,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21289 states. [2025-01-09 06:06:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21289 to 20753. [2025-01-09 06:06:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20753 states, 17637 states have (on average 1.20723479049725) internal successors, (21292), 17789 states have internal predecessors, (21292), 1693 states have call successors, (1693), 1292 states have call predecessors, (1693), 1422 states have return successors, (3070), 1675 states have call predecessors, (3070), 1693 states have call successors, (3070) [2025-01-09 06:06:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20753 states to 20753 states and 26055 transitions. [2025-01-09 06:06:58,433 INFO L78 Accepts]: Start accepts. Automaton has 20753 states and 26055 transitions. Word has length 161 [2025-01-09 06:06:58,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:06:58,433 INFO L471 AbstractCegarLoop]: Abstraction has 20753 states and 26055 transitions. [2025-01-09 06:06:58,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 06:06:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 20753 states and 26055 transitions. [2025-01-09 06:06:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-01-09 06:06:58,450 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:06:58,450 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:06:58,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 06:06:58,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-09 06:06:58,651 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:06:58,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:06:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1189302348, now seen corresponding path program 1 times [2025-01-09 06:06:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:06:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105299913] [2025-01-09 06:06:58,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:06:58,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-01-09 06:06:58,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 06:06:58,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:58,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-01-09 06:06:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:06:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105299913] [2025-01-09 06:06:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105299913] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:06:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359698816] [2025-01-09 06:06:58,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:06:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:06:58,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:06:58,723 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:06:58,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 06:06:58,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-01-09 06:06:58,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 06:06:58,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:06:58,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:06:58,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 06:06:58,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:06:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 06:06:58,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:06:58,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359698816] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:06:58,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:06:58,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-01-09 06:06:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435949644] [2025-01-09 06:06:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:06:58,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:06:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:06:58,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:06:58,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 06:06:58,917 INFO L87 Difference]: Start difference. First operand 20753 states and 26055 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 06:07:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:00,686 INFO L93 Difference]: Finished difference Result 41493 states and 52625 transitions. [2025-01-09 06:07:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:07:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 163 [2025-01-09 06:07:00,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:00,759 INFO L225 Difference]: With dead ends: 41493 [2025-01-09 06:07:00,759 INFO L226 Difference]: Without dead ends: 20753 [2025-01-09 06:07:00,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-09 06:07:00,790 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 173 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:00,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 277 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 06:07:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20753 states. [2025-01-09 06:07:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20753 to 20753. [2025-01-09 06:07:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20753 states, 17637 states have (on average 1.177297726370698) internal successors, (20764), 17789 states have internal predecessors, (20764), 1693 states have call successors, (1693), 1292 states have call predecessors, (1693), 1422 states have return successors, (3070), 1675 states have call predecessors, (3070), 1693 states have call successors, (3070) [2025-01-09 06:07:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20753 states to 20753 states and 25527 transitions. [2025-01-09 06:07:01,796 INFO L78 Accepts]: Start accepts. Automaton has 20753 states and 25527 transitions. Word has length 163 [2025-01-09 06:07:01,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:01,797 INFO L471 AbstractCegarLoop]: Abstraction has 20753 states and 25527 transitions. [2025-01-09 06:07:01,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 06:07:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20753 states and 25527 transitions. [2025-01-09 06:07:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-01-09 06:07:01,805 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:07:01,805 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:01,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 06:07:02,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 06:07:02,006 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:07:02,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:07:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1263189234, now seen corresponding path program 1 times [2025-01-09 06:07:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:07:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42383164] [2025-01-09 06:07:02,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:07:02,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-01-09 06:07:02,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 06:07:02,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:02,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-01-09 06:07:02,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:07:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42383164] [2025-01-09 06:07:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42383164] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:07:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938395659] [2025-01-09 06:07:02,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:02,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:02,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:07:02,060 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:07:02,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 06:07:02,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-01-09 06:07:02,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 06:07:02,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:02,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:02,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 06:07:02,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:07:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 06:07:02,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:07:02,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938395659] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:07:02,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:07:02,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-01-09 06:07:02,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88812250] [2025-01-09 06:07:02,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:07:02,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:07:02,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:07:02,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:07:02,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 06:07:02,238 INFO L87 Difference]: Start difference. First operand 20753 states and 25527 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 06:07:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:03,108 INFO L93 Difference]: Finished difference Result 29305 states and 36349 transitions. [2025-01-09 06:07:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:07:03,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 163 [2025-01-09 06:07:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:03,162 INFO L225 Difference]: With dead ends: 29305 [2025-01-09 06:07:03,163 INFO L226 Difference]: Without dead ends: 15661 [2025-01-09 06:07:03,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-09 06:07:03,183 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 169 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:03,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 270 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 06:07:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15661 states. [2025-01-09 06:07:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15661 to 15661. [2025-01-09 06:07:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15661 states, 13331 states have (on average 1.1582026854699572) internal successors, (15440), 13407 states have internal predecessors, (15440), 1289 states have call successors, (1289), 980 states have call predecessors, (1289), 1040 states have return successors, (2286), 1275 states have call predecessors, (2286), 1289 states have call successors, (2286) [2025-01-09 06:07:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15661 states to 15661 states and 19015 transitions. [2025-01-09 06:07:03,868 INFO L78 Accepts]: Start accepts. Automaton has 15661 states and 19015 transitions. Word has length 163 [2025-01-09 06:07:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:03,868 INFO L471 AbstractCegarLoop]: Abstraction has 15661 states and 19015 transitions. [2025-01-09 06:07:03,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 06:07:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 15661 states and 19015 transitions. [2025-01-09 06:07:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-01-09 06:07:03,872 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:07:03,872 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:03,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 06:07:04,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:04,076 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:07:04,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:07:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash -18983052, now seen corresponding path program 1 times [2025-01-09 06:07:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:07:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163188323] [2025-01-09 06:07:04,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:04,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:07:04,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-01-09 06:07:04,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 06:07:04,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:04,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-01-09 06:07:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:07:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163188323] [2025-01-09 06:07:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163188323] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:07:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643615529] [2025-01-09 06:07:04,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:04,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:04,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:07:04,127 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:07:04,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 06:07:04,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-01-09 06:07:04,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 06:07:04,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:04,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:04,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 06:07:04,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:07:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-01-09 06:07:04,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:07:04,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643615529] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:07:04,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:07:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-01-09 06:07:04,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645358151] [2025-01-09 06:07:04,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:07:04,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:07:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:07:04,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:07:04,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 06:07:04,239 INFO L87 Difference]: Start difference. First operand 15661 states and 19015 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 06:07:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:04,852 INFO L93 Difference]: Finished difference Result 25793 states and 31843 transitions. [2025-01-09 06:07:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 06:07:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 163 [2025-01-09 06:07:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:04,913 INFO L225 Difference]: With dead ends: 25793 [2025-01-09 06:07:04,913 INFO L226 Difference]: Without dead ends: 10144 [2025-01-09 06:07:04,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 06:07:04,936 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:04,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 650 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:07:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10144 states. [2025-01-09 06:07:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10144 to 6359. [2025-01-09 06:07:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 5442 states have (on average 1.1422271223814775) internal successors, (6216), 5477 states have internal predecessors, (6216), 506 states have call successors, (506), 378 states have call predecessors, (506), 410 states have return successors, (713), 504 states have call predecessors, (713), 506 states have call successors, (713) [2025-01-09 06:07:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 7435 transitions. [2025-01-09 06:07:05,303 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 7435 transitions. Word has length 163 [2025-01-09 06:07:05,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:05,304 INFO L471 AbstractCegarLoop]: Abstraction has 6359 states and 7435 transitions. [2025-01-09 06:07:05,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 06:07:05,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 7435 transitions. [2025-01-09 06:07:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-01-09 06:07:05,308 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:07:05,308 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:05,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 06:07:05,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:05,509 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:07:05,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:07:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -24239194, now seen corresponding path program 1 times [2025-01-09 06:07:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:07:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802203794] [2025-01-09 06:07:05,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:05,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:07:05,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-01-09 06:07:05,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-01-09 06:07:05,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:05,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-01-09 06:07:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:07:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802203794] [2025-01-09 06:07:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802203794] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:07:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128231677] [2025-01-09 06:07:05,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:05,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:05,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:07:05,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:07:05,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 06:07:05,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-01-09 06:07:05,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-01-09 06:07:05,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:05,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:05,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 06:07:05,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:07:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-09 06:07:05,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:07:05,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128231677] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:07:05,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:07:05,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:07:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351291530] [2025-01-09 06:07:05,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:07:05,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:07:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:07:05,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:07:05,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:07:05,731 INFO L87 Difference]: Start difference. First operand 6359 states and 7435 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-01-09 06:07:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:05,997 INFO L93 Difference]: Finished difference Result 11667 states and 14017 transitions. [2025-01-09 06:07:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:07:05,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 197 [2025-01-09 06:07:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:06,032 INFO L225 Difference]: With dead ends: 11667 [2025-01-09 06:07:06,032 INFO L226 Difference]: Without dead ends: 6295 [2025-01-09 06:07:06,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:07:06,044 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 89 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:06,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 379 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:07:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6295 states. [2025-01-09 06:07:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6295 to 6259. [2025-01-09 06:07:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6259 states, 5350 states have (on average 1.1157009345794393) internal successors, (5969), 5381 states have internal predecessors, (5969), 506 states have call successors, (506), 378 states have call predecessors, (506), 402 states have return successors, (701), 500 states have call predecessors, (701), 506 states have call successors, (701) [2025-01-09 06:07:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 7176 transitions. [2025-01-09 06:07:06,348 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 7176 transitions. Word has length 197 [2025-01-09 06:07:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:06,349 INFO L471 AbstractCegarLoop]: Abstraction has 6259 states and 7176 transitions. [2025-01-09 06:07:06,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-01-09 06:07:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 7176 transitions. [2025-01-09 06:07:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-01-09 06:07:06,352 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:07:06,353 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:06,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 06:07:06,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-09 06:07:06,557 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:07:06,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:07:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash -91345000, now seen corresponding path program 1 times [2025-01-09 06:07:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:07:06,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535029521] [2025-01-09 06:07:06,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:07:06,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-01-09 06:07:06,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-01-09 06:07:06,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:06,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2025-01-09 06:07:06,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:07:06,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535029521] [2025-01-09 06:07:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535029521] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:07:06,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452359395] [2025-01-09 06:07:06,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:06,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:06,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:07:06,619 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:07:06,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 06:07:06,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-01-09 06:07:06,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-01-09 06:07:06,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:06,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:06,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 06:07:06,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:07:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 91 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 06:07:06,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 06:07:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-01-09 06:07:06,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452359395] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 06:07:06,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 06:07:06,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-01-09 06:07:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183811246] [2025-01-09 06:07:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:07:06,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:07:06,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:07:06,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:07:06,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 06:07:06,927 INFO L87 Difference]: Start difference. First operand 6259 states and 7176 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 06:07:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:07,779 INFO L93 Difference]: Finished difference Result 19242 states and 22007 transitions. [2025-01-09 06:07:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 06:07:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 199 [2025-01-09 06:07:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:07,860 INFO L225 Difference]: With dead ends: 19242 [2025-01-09 06:07:07,860 INFO L226 Difference]: Without dead ends: 15876 [2025-01-09 06:07:07,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 06:07:07,873 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 392 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:07,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1135 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 06:07:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15876 states. [2025-01-09 06:07:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15876 to 14910. [2025-01-09 06:07:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14910 states, 12731 states have (on average 1.1131097321498704) internal successors, (14171), 12804 states have internal predecessors, (14171), 1212 states have call successors, (1212), 880 states have call predecessors, (1212), 966 states have return successors, (1612), 1226 states have call predecessors, (1612), 1212 states have call successors, (1612) [2025-01-09 06:07:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14910 states to 14910 states and 16995 transitions. [2025-01-09 06:07:08,722 INFO L78 Accepts]: Start accepts. Automaton has 14910 states and 16995 transitions. Word has length 199 [2025-01-09 06:07:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:08,722 INFO L471 AbstractCegarLoop]: Abstraction has 14910 states and 16995 transitions. [2025-01-09 06:07:08,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 06:07:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 14910 states and 16995 transitions. [2025-01-09 06:07:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-01-09 06:07:08,730 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:07:08,730 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:08,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 06:07:08,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-09 06:07:08,935 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:07:08,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:07:08,936 INFO L85 PathProgramCache]: Analyzing trace with hash 820126029, now seen corresponding path program 1 times [2025-01-09 06:07:08,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:07:08,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882233896] [2025-01-09 06:07:08,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:07:08,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-01-09 06:07:08,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-01-09 06:07:08,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:08,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-01-09 06:07:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:07:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882233896] [2025-01-09 06:07:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882233896] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 06:07:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744648127] [2025-01-09 06:07:08,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:07:08,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:07:08,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:07:08,996 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:07:09,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 06:07:09,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-01-09 06:07:09,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-01-09 06:07:09,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:07:09,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:09,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 06:07:09,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:07:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2025-01-09 06:07:09,125 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:07:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744648127] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:07:09,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 06:07:09,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 06:07:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987510019] [2025-01-09 06:07:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:07:09,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 06:07:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:07:09,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 06:07:09,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:07:09,127 INFO L87 Difference]: Start difference. First operand 14910 states and 16995 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2025-01-09 06:07:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:09,786 INFO L93 Difference]: Finished difference Result 30129 states and 34336 transitions. [2025-01-09 06:07:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 06:07:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 246 [2025-01-09 06:07:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:09,844 INFO L225 Difference]: With dead ends: 30129 [2025-01-09 06:07:09,845 INFO L226 Difference]: Without dead ends: 15232 [2025-01-09 06:07:09,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:07:09,869 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 140 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:09,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 312 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:07:09,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15232 states. [2025-01-09 06:07:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15232 to 13792. [2025-01-09 06:07:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13792 states, 11789 states have (on average 1.1059462210535245) internal successors, (13038), 11864 states have internal predecessors, (13038), 1110 states have call successors, (1110), 808 states have call predecessors, (1110), 892 states have return successors, (1473), 1120 states have call predecessors, (1473), 1110 states have call successors, (1473) [2025-01-09 06:07:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13792 states to 13792 states and 15621 transitions. [2025-01-09 06:07:10,673 INFO L78 Accepts]: Start accepts. Automaton has 13792 states and 15621 transitions. Word has length 246 [2025-01-09 06:07:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:10,674 INFO L471 AbstractCegarLoop]: Abstraction has 13792 states and 15621 transitions. [2025-01-09 06:07:10,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2025-01-09 06:07:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13792 states and 15621 transitions. [2025-01-09 06:07:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-01-09 06:07:10,680 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:07:10,680 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:10,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 06:07:10,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 06:07:10,881 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:07:10,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:07:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 686112523, now seen corresponding path program 2 times [2025-01-09 06:07:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:07:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593714072] [2025-01-09 06:07:10,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 06:07:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:07:10,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 246 statements into 2 equivalence classes. [2025-01-09 06:07:10,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 246 statements. [2025-01-09 06:07:10,893 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 06:07:10,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:07:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2025-01-09 06:07:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:07:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593714072] [2025-01-09 06:07:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593714072] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:07:10,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:07:10,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:07:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734500686] [2025-01-09 06:07:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:07:10,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:07:10,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:07:10,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:07:10,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:07:10,918 INFO L87 Difference]: Start difference. First operand 13792 states and 15621 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-01-09 06:07:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:07:11,107 INFO L93 Difference]: Finished difference Result 17401 states and 19733 transitions. [2025-01-09 06:07:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 06:07:11,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 246 [2025-01-09 06:07:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:07:11,129 INFO L225 Difference]: With dead ends: 17401 [2025-01-09 06:07:11,129 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 06:07:11,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:07:11,144 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:07:11,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:07:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 06:07:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 06:07:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 06:07:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 06:07:11,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 246 [2025-01-09 06:07:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:07:11,160 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 06:07:11,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-01-09 06:07:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 06:07:11,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 06:07:11,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-01-09 06:07:11,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-01-09 06:07:11,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-01-09 06:07:11,165 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:07:11,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 06:07:42,677 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 694 DAG size of output: 141 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2025-01-09 06:07:49,716 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 698 DAG size of output: 125 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)